Question

What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole

Answer 1

Answer:

We see small particles suspended in the air which are known as SPM.

Answer 2

Answer:

it depends on which type of light is been beamed

Explanation:

if the color of light is warm like red,orange etc

then we may see a parallel beam of light whereas if the color is cool like blue,green,etc we may not see a parallel beam and the light will get scattered all over the room